Alkaryl-alkoxy, aryl-amido derivatives of pyridine

ABSTRACT

This disclosure relates to new mono- and poly-substituted pyridine derivatives, their methods of preparation and use as pesticides. A broad classification of preferred pyridine derivatives is characterized by the following formula: WHERE N CAN BE AN INTEGER OF FROM 1 TO 4, AND WHEREIN X and (AD-Z) can occupy any ring position of from 2 to 6. X can be hydrogen, dialkylamino, alkylthio, halogen such as chlorine, fluorine, or iodine, amino, nitro, arylthio alkoxyl, phenoxyl, alkylamino, alkyl. Relative to the A-D-Z substituent, I. A can be O, NH, II. D can be any of the following: (a) (CH2)1 6, (b) (CH2)nG(CH2)n where n is 1-6 and G is NR, O, S, SO, SO2, and (c) an alkyl linkage having from one to six carbon atoms and a substituent (R) located at the terminal, or any adjacent, carbon atom; and III. Z can be: (1) a substituted amino group of the formula WHERE THE L moiety may or may not be the same and is defined alternatively as WHERE M is S, or O and R&#39;&#39; is NHR, NR2, OR, SR, haloalkyl (mono, di and tri), C1-C12 alkyl and alkenyl (branched and unbranched), hydrogen, C7-C10 cycloalkyl, phenyl and C8-C12 alkenyl phenyl, or as SOR, or SO2R; (2) O - L (L being as in III(1)) except that A cannot be oxygen; and (3) phenyl, substituted phenyl, alkenyl, alkynyl, haloalkyl. The moiety R wherever it appears above is meant to include any of the following: hydrogen, alkyl, cycloalkyl, aralkyl, aryl, alkenyl, alkynyl, carboxyl or substituted alkyl whose substituents are as defined by Xn above.

United States Patent Zielinski Aug. 29, 1972 [54] ALKARYL-ALKOXY, ARYL-AMIDO DERIVATIVES OF PYRIDINE [62] Division of Ser. No. 664,944, Sept. 1, 1967,

Pat. No. 3,535,328.

52 US. Cl ..260/295 AM, 2 9/2 94 2 2 0/294.s0260/2956 A,

260/296 R, 260/297 R, 424/263, 424/266, 71/94 51 Int. Cl. ..C07d 31/44 [58] Field of Search ..260/295 AM, 295.5 A

[5 6] References Cited OTHER PUBLICATIONS Schuler et al., Chem. Abstracts, Vol. 60, 14,515, (1960) Primary ExaminerAlan L. Rotman Attorney-Chasan and Sinnock and John Paul Corcoran [5 7] ABSTRACT This disclosure relates to new monoand poly-substituted pyridine derivatives, their methods of preparation and use as pesticides. A broad classification of preferred pyridine derivatives is characterized by the following formula:

where n can be an integer of from 1 to 4, and wherein X and (ADZ) can occupy any ring position of from 2 to 6. X can be hydrogen, dialkylamino, alkylthio, halogen such as chlorine, fluorine, or iodine, amino, nitro, arylthio alkoxyl, phenoxyl, alkylamino, alkyl. Relative to the ADZ substituent, l. A can be 0, NH, II, D can be any of the following: (a) (Cl-1 (b) (CH 9 C(CH 9 where n is 1-6 and G is NR, 0, S, S0, S0,, and (c) an alkyl linkage having from one to six carbon atoms and a substituent (R) located at the terminal, or any adjacent, carbon atom; and III. Z can be: (1) a substituted amino group of the formula where the L moiety may or may not be the same and is defined alternatively as where M is S, or O and R is NHR, NR OR, SR, haloalkyl (mono, di and tri), C C alkyl and alkenyl (branched and unbranched), hydrogen, C -C cycloalkyl, phenyl and C -C alkenyl phenyl, or as SOR, or SO R; (2) O L [L being as in III(1)] except that A cannot be oxygen; and (3) phenyl, substituted phenyl, alkenyl, alkynyl, haloalkyl. The moiety R wherever it appears above is meant to include any of the following: hydrogen, alkyl, cycloalkyl, aralkyl, aryl, alkenyl, alkynyl, carboxyl or substituted alkyl whose substituents are as defined by X above.

48 Claims, No Drawings ALKARYL-ALKOXY, ARYL-AMIDO DERIVATIVES OF PYRIDINE DESCRIPTION OF THE INVENTION This application is a dvisional of an application entitled Novel Monoand Poly-Substituted Pyridine Derivatives and Their Use As Pesticides filed on Sept. 1, 1967 having Ser. No. 664,944, now U.S. Patent No. 3,535,328, issued Oct. 20, 1970.

This invention relates to new compositions having pesticidal activity, comprising both monoand polysubstituted pyridine derivatives.

A number of substituted pyridine derivatives, however, are already known in the prior art. Exemplary of such known pyridine derivatives are the pyridylethyl ethers disclosed in U.S. Pat. No. 2,667,491; the 2- amino-6-thiohydrocarbonpyridines disclosed in U.S. Pat. No. 3,247,214; the poly-substituted pyridines disclosed in U.S. Pat. No. 3,252,858; the pyridylthiol carbonates disclosed in U.S. Pat. No. 3,284,459; the pyridylthiocarbamates disclosed in U.S. Pat. No. 3,284,460; the pyridyl-phosphorodithioic acid esters disclosed in U.S. Pat. No. 3,304,226; the esters of pyridine di-carboxylic acids disclosed in U.S. Pat. No. 2,757,120; etc.; however, none of the above know pyridine derivatives is suggestive of the pyridine compounds of this invention.

In accordance with another broad aspect of the present invention, there are provided novel monoand poly-substituted amide derivatives, including benzyloxy amide derivatives, of pyridine. Such pyridine derivatives are, in general, characterized by the following general formula:

where n can be an integer of from 1 to 4, and X and (ADZ) can occupy any position of from 2 to 6. When n is 1, X can be any of the following representative groups:

hydrogen halogen alkoxyl carboxyl hydroxyl mercapto imido amino alkyl dialkylamino nitro benzyloxy When n is greater than 1, X can be the same or a combination of any of the above substituents.

A can be 0, NR.

D can be 1. (CI-I where n is 1-6; 2. (CI-l ),,G(CH wherein n is 1-6, and G is NR, 0, S, SO, S 3. an alkyl linkage having from 1-6 carbon atoms and a substituent (R) located at the terminal or any adjacent carbon atom.

Z can be 1. a substituted amino group of the formula /R /L N where L is CHR or N L M L where the Us can be the same or different and L is and where, in the case of both and N M is NR, S, or O and R is NI-IR, NR OR, SR, haloalkyl (mono, di and tri), C, C alkyl and alkenyl (branched and unbranched), hydrogen, C -C cycloalkyl, phenyl and C C alkenyl phenyl; L can also be S O l lORh, BYOB);

SOR, or 80 R;

2. O-L (L being as just defined in 1) except that A cannot be oxygen; and

3. Z phenyl, substituted phenyl, alkenyl, alkynyl, haloalkyl.

The moiety R wherever it appears above is meant to include any of the following: (1) hydrogen; (2) alkyl, comprising aliphatic compounds having from one to 10 carbon atoms; (3) cycloalkyl, comprising hydrocarbon compounds having from one to 10 carbon atoms, including polycyclic systems, such as, for example, de-

calines; (4) aralkyl, comprising compounds of the formula: -(CH (C6H )-(X,,) wherein X is as previously described; (5) aryl, comprising compounds of the formula: (C H )(X,,), wherein X is as previously described; (6) substituted alkyl, comprising alkyl groups, as defined in (1), being substituted by X, type compounds previously described in a manner and/or nature well known to those skilled in the art; and (7) carboxyl.

Compounds illustrative and exemplary of the abovedefined novel monoand polysubstituted amide derivatives of pyridine are described and contained elsewhere herein, particularly in the examples which follow and in the tables included therein.

In accordance with a specific embodiment of the present invention, there are provided novel monoand mula:

xngonz" where X and D are as previously defined and Z is a substituted amino group of the formula and R is NHR, NR OR, SR, haloalkyl (mono, di and tri), C -C alkyl and alkenyl (branched and unbranched), hydrogen, C -C cycloalkyl, phenyl and C C alkenyl phenyl and M is NR, S or O, with R as previously defined.

3 4 In accordance with another specific embodiment of Also in accordance with this invention is provided a the present invention, there are provided novel mononumber of different processes for preparation of the and poly-substituted pyridine derivatives of the follownew compounds set forth hereinabove. For example, by ing general formula: means of the following six methods of synthesis, the 5 aforementioned amide derivatives of this invention may be prepared. m Method A (utilizing a 2-, 4-, and/or G-halopyridine n reactant) E M+ D z where X,,, I) and Z are as previously defined except halogen that X may occupy only the positions 2, 3, 4, and/or and ()DZ may only occupy the 6- position.

In accordance with another specific embodiment of the present invention, there are provided novel disub- N O stituted pyridine derivatives of the following general Method B (utilizing a fi-halopyridine l 5 X M halide formula: reactant) mom/Kr H X11 H-N-DZ X I X ODZ \N halogen A, solvent \N ND Z Method 0 h X d D d on triethylamine w ere an an Z are asprevlously defined. ADNHR Rd halogen In accordance wlth another specific embodiment of the present invention, there are provided novel diand N if substituted pyridine derivatives of the following general C R formula: (H)

Xu ADN(|) R R k fl Method D N o o H H Xi. ADNHR (ROMO Xn ADbIICR where X and D and Z are as previously defined. (0R) R In accordance with another specific embodiment of 0 the present invention, there are provided novel 2,6-disubstituted pyridine derivatives of the following general Method E formula:

Xn ADNHR RN=C=S \\N X- \N -0DZ n X1. ADITICER where X and D and Z are as previously defined. N

In accordance with still another specific embodiment -o CNHR of the present invention, there are provided novel 2,6- 0 s) disubstituted pyridine derivatives of the following Metho F general formula: 0 s) (OH) {I Xn A--D-NH halogen (OR)! I 1'1 triethyl X ODNR1 amine N o s A n iii OR Eh I where X, D, and R are as previously defined. Xn I )z a ogen In accordance with yet another specific embodiment R of the present invention, there are provided novel 2,6- e ho G disubstituted pyridine derivatives of the following general formula: triethylamlne where X and Z are as previously defined. N R

In general, the preparative methods for producing the pyridine derivatives of this invention involve nucleophilic displacement of an appropriate displaceable group from a suitable substituted pyridine. The general reaction conditions for these methods of preparation of the various substituted pyridine derivatives of this invention comprise temperatures ranging from about C. to about 200C, preferably from about 80C. to about 130C. The reaction time may vary from about 1 to about 48 hours, depending upon the choice of reactants and the reaction conditions, but may take as long as about 72 hours. Ordinarily, however, the reaction should take no longer than about 12 hours. Various solvents useful in the foregoing methods of preparation include such as toluene, benzene, xylene, dimethylformamide, triethylamine, etc.

Exemplary of the foregoing monoand polysubstituted amine and amide pyridine derivatives of this in- ,vention are the following compounds, represented by their structural formulae: (This list is only representative and is not, by any means, intended to be exhaustive.)

N(CH2)4N( 3CaH1 (3H3 III OgN l t \N -0om-pn -oumoom om 1r N If JJHa As previously noted, the mono-substituted and polysubstituted pyridine derivatives of this invention are useful as pesticides. One aspect of such pesticidal application is as a herbicide, either pre-emergent or postemergent, or as a fungicide. When used as a fungicide or herbicide, the compositions of this invention may be used to control plant growth or fungi thereon by either applying to foliage or plant growth media, a growthor fungi-controlling dosage of the mono-or poly-substituted pyridine compound or of concentrated com positions prepared by bringing the aforesaid compound (as an active ingredient) in intimate admixture with at least one material of the group consisting of finely divided inert solids, granular solids, surface active dispersing agents, poly-glycols, beeswax, paraffin waxes, water, organic solvents, nitrogen fertilizers, potassium fertilizers, urea, metaphosphates, etc. Particularly contemplated as desirable concentrate compositions are those which comprise the aforesaid monoor poly-substituted pyridine compounds as active ingredient in intimate admixture with at least one materi- -agents. Another type of useful concentrate compositioncontemplated according to this invention is the aqueous concentrate composition comprising an aforesaid pyridine derivative as an amine salt.

The expression surface active dispersing agent as herein employed is intended to include all agents which are capable of acting at the interfacil surface between the aforesaid pyridine derivative or composition and water or organic solvents as the dispersion medium, facilitating thereby the dispersion of the toxicant in water or organic solvents to form aqueous and emulsifiable concentrate. The term is inclusive of solid emulsifying agents such as finely divided bentonite, pyrophyllite, fullers earth, attapulgite, silica, other clays and mineral carriers, as well as liquid and solid ionic and non-ionic wetting and dispersing agents, alkaline earth metal caseinates, alkyl aryl sulfonates, sulfonated oils, complex organic ester derivatives, complex ether alcohols, condensation products of alkylene oxides with phenols and organic acids, poly-oxy ethylene derivatives of Sorbitan esters, mahogany soaps, etc.

Other suitable surface active dispersing agents may be found in Detergents and Emulsifiers, Up to Date, written and published by John W. McCutcheon, Inc., New York, 1962.

The term finely divided inert solids as herein employed refers to material whose primary function is not as dispersant of the present pyridine derivatives in water or organic solvents but as carrier for dust compositions. Illustrative of such carriers are materials such as chalk, talc, gypsum, etc.

The term inert granular solids refers to mineral or other inert carriers which are suitable for dry application and which include corn cobs, sand, and other materials which differ primarily in particle size from the finely divided inert solids.

According to the present invention, any of the appropriate monoor poly-substituted pyridine derivatives disclosed herein may be compounded with any of the finely divided solids to form dust compositions by grinding, mixing or wetting the finely divided carrier with a solution of the toxicant in a volatile organic solvent. Similarly, dust compositions containing the aforesaid pyridine derivatives may be compounded from any one or more of the solid surface active dispersing agents previously mentioned, such as bentonite, fullers earth, attapulgite and other clays. Depending upon the proportions of ingredients, these dust mixtures may be employed either as treating compositions or as concentrates to be subsequently diluted with additional solid surface active dispersing agent or with talc, chalk, gypsum, etc., to obtain the desired amount of toxicant in a composition adapted to be applied to plants, plant growth media or fungi thereon, for the suppression of plant growth or said fungi. Also, such concentrate dust compositions may be dispersed in water or organic solvent with or without the aid of additional dispersing or emulsifying agents to form spray mixtures.

Dust concentrates, such as above-described, or alternatively appropriate monoor poly-substituted pyridine compounds may be intimately mixed with liquid or solid ionic or non-ionic dispersing agents to form spray concentrates. Such concentrates are readily dispersible in liquid carriers to form sprays containing the monoor poly-substituted pyridine derivatives in any desired amount.

Any of the monoor poly-substituted pyridine compounds of this invention may also be compounded with suitable water-miscible or water-immiscible organic liquid and surface active dispersing agents to produce liquid concentrates which may be further formulated with water and/or oil to prepare spray mixtures in the form of aqueous dispersions or oil-in-water emulsion compositions. The exact step to be employed in preparing such compositions is within the knowledge of those skilled in the art. Preferred water-immiscible organic liquids include petroleum oil and distillates, toluene, xylene, cumene and other aromatic hydrocarbon solvents, chlorinated aliphatic hydrocarbons, isoparafi'rn oil and other aliphatic hydrocarbon solvents. Watermiscible organic solvents include acetone, methylethyl ketone, cyclohexanone, alcohols, dimethyl formamide, ether alcohols of ethylene glycol marketed under trade names such as DOWANOL and CELLOSOLVE, and esters such as ethyl acetate, secondary butyl acetate and isopropyl acetate. When the aforesaid pyridine derivatives of this invention are alkali metal, ammonium or amine salts, aqueous concentrate compositions are readily prepared. The salts may be first compounded in a water-miscible organic solvent and added to a minimal amount of water, or they may be directly compounded in water or in a water-organic solvent mixture. Usually, the use of a procedure which includes addition of a small amount of a water-miscible organic solvent is preferred. Moreover, in the case of salt compositions, the salt need not be preformed but may be prepared during the compounding process. Thus, the desired monoor poly-substituted pyridine compound and desired amine or inorganic base may be mixed together in appropriate amounts in an aqueous organic solvent mixture.

The present compositions may also contain other plant growth modifying agents either as adjuvants or supplementary materials for both terrestrial and equetic applications.

In carrying out the methods of the present invention, as they pertain to the control of fungi or of plant growth or vegetation, the monoor poly-substituted pyridine compounds of this invention are administered to foliage, plant parts or growth media of the plant species whose pesticide control is desired. The exact amount to be administered varies with the particular type of growth control to be achieved. It further varies with method of application, i.e., whether the application is to be made to foliage, food, flower, or particular plant part, or to soil or other growth media, and the overall site of application: a sheltered area, such as a greenhouse; or an exposed area, such as fields, etc. Thus, as for example, in the treatment of grass and weeds, soil application is preferred to foliage application and the amounts are governed thereby. Also, weeds present in sheltered areas are more responsive to treatment and minimal dosages are usually adequate whereas field applications often times require higher dosages to counteract adverse weather effects. An additional factor to be considered is the plant species to be treated, as well as the presence or absence of desirable plants together with the undesirable species. Thus, selective grass control may be achieved by administering sufficient pyridine derivatives of this invention to irradicate grasses without affecting broad leaf.

Effective control of terrestrial plants in soil may be readily achieved by the administration of various pyridine derivatives of this invention.

The administration of the present compounds or compositions thereof to plant or plant growth media may be carried out in any manner known to those skilled in the art and may be carried out by using dust compositions, sprays or any other modification provided that an effective dosage is supplied. It is to be understood that the total volume or weight of the treating compositions to be employed is not critical so long as the critical amount of the aforesaid pyridine compounds is supplied. Frequently, the desirability of a more concentrated or dilute composition depends upon the method of application and the area to be covered; hence, the selection of the concentration and total volume or weight may be made by those of ordinary skill in the art of the foregoing teachings.

While the aforementioned discussion has focused upon the use of the aforesaid pyridine compounds of this invention as fungicides or herbicides, they may also be used as nematocides or insecticides by formulating such insecticides or nematocides from said monoor poly-substituted pyridine compounds of this invention in any suitable form, such as: a solution, dust, emulsion,

suspension, aerosol, fog or the like, or as a pure compound. Solvents or carriers found suitable in this regard include those which are substantially inert with respect to the active repellent ingredient. Among these materials, which are useful for this purpose, are acetone, kerosene, naphtha, and other liquid hydrocarbons boiling preferably above atmospheric temperature. Solid inert carrier materials are also contemplated and utilized, such as, for example, talc, Kieselguhr, and other inert carriers, when preparing dust. The active insect repellent or nematocide ingredients of this invention may be applied in the form of an aqueous emulsion or dispersion preferably when employing a wetting or dispersing agent, as, for example, Triton X-lOO (an alkylated aryl polyether alcohol), Tween 20 (a sorbitan monolaurante polyoxyethylene derivative), etc. In some instances, the active ingredient can be as advantageously applied as the pure compound without a carrier of any kind.

The present invention is further illustrated in greater detail by the following examples, but it is to be understood that the present invention, in its broadest aspects, is not necessarily limited in terms of the specific temperatures, residence times, separation techniques, and other process conditions by which the compounds and/or compositions described and claimed are prepared and used.

In the following examples, the compounds prepared in Examples l-84 are included in Table 1(a) and I(b) and the nomenclature of each of the compounds included in Examples 1-84 is included in Table I(c). The compounds prepared in Examples 85-148 and the nomenclature thereof are included in Table ll(a). The methods of preparation by which each of the compounds shown in Examples l-l48 is prepared are designated alphabetically from A-l inclusive. The general experimental procedures of Methods A-I are included herebelow.

EXPERIMENTAL PROCEDURES Method A i The metal salt of the appropriate alcohol or thioalcohol was combined with a solution of the properly substituted 2,4 or 6 mono-, dior trihalo pyridine in an appropriate solvent (toluene, xylene, dimethylformamide) and heated to reflux for from 2 to 48 hours, filtered and evaporated to yield a material which whenever possible was either distilled or crystallized to yield the desired product. Method B The amine compound was combined with a solution of the properly substituted 2, 4 or 6 mono-, dior trihalopyridine in an appropriate solvent (toluene, xylene, dimethylformamide) containing potassium carbonate and potassium iodide and heated at reflux for from 2 to 48 hours, filtered, evaporated and the resulting material either distilled or crystallized to yield the desired product. Method C The appropriate acyl halide was added as a solution or in its pure state dropwise to a solution containing the pyridylamine or alcohol and triethylamine in the appropriate solvent (ether, benzene, toluene, acetone, etc.) maintained from 40 to C. The reaction was allowed to be stirred at room temperature or refluxed from 2 to 48 hours, filtered and the resulting solution evaporated and whenever possible the product was crystallized from an appropriate solvent or distilled to yield the desired product. MethodD The appropriate pyridyl alcohol or amine, and anhydride were combined in the proper solvent (ether, benzene, toluene, etc.) and refluxed from 2 to 48 hours, washed with base and evaporated to yield a product which whenever possible was crystallized or distilled to yield the desired product. Method E The appropriate isocyanate or isothiocyanate was added dropwise in solution or in its pure state to a solution of the pyridyl amine or alcohol in the proper solvent (ether, benzene, toluene, etc.) and after the exothermic reaction subsided the solution or suspension was refluxed from 2 to 48 hours and the solvent removed under vacuum to yield a product which whenever possible was crystallized to yield the proper derivative. Method F The appropriate halophosphate or halothiophosphate was added dropwise in its pure state or as a solution at room temperature to a solution of the pyridyl amine or alcohol and triethylamine in the proper solvent (ether, toluene, xylene, etc.) and after the usual exothermic reaction brought to reflux from 2 to 48 hours, filtered, evaporated and whenever possible the product was either distilled or crystallized to yield the desired derivative. Method G The appropriate sulfonyl halide was added to Method C.

TABLE I (a) Ex. Com- No. pound Method of Prep.

Phys. Prop.

sea-e4" sun l 2-chloro-6(2-acetamidoethoxy)pyridine 2-bromo-6( Z-acetamidoethoxy)pyridine 2-chloro-6(2-propionamidoethoxy )pyridine 2-bromo-6(2-propionarnidoethoxy)pyridine 2-chloro-6(Z-butyramidoethoxy)pyridine 2-bromo-6( Z-butyramidoethoxy)pyridine 2-chlor0-6( 2-cyclopropylcarboxamidoethoxy)pyridine 2-bromo-6( 2-cyclopropylcarboxamidoethoxy)pyridine 2-chloro-6( 2-isobutyramidoethoxy)pyridine 2-bromo-6( 2-isobutyramidoethoxy)pyridine 2-chloro-6( 2-decanamidoethoxy)pyridine 2-bromo-6( Z-decanamidoethoxy)pyridine 2-chloro-6( 2-cyclohexylcarboxamidoethoxy)pyridine 2-bromo-6( 2-cyclohexylcarboxamidoethoxy )pyridine 2-chloro-6[2( l-methylvaleramido)ethoxy1pyridine 2-bromo-6[ 2( l -met.hylvaleramido)ethoxy1pyridine 2-chloro-6(2-cyclobutylcarboxamidoethoxy)pyridine 2-bromo-6( 2-cyclobutylcarboxamidoethoxy )pyridine 2-chloro-6 2( l-chloroacetamido)ethoxy pyridine 2-bromo-6 2( l-chloroacetamido )ethoxy pyridine 2-chloro-6 2( l, l ,l-trichloroacetamido)ethoxy pyridine 2-bromo-6 2( l l l -trichloroacetamido )ethoxy pyridine 2-chloro-6(Z-cinnamidoethoxy )pyridine 2-bromo-6( 2-cinnamidoethoxy)pyridine 2-chloro-6( 2-benzamidoethoxy)pyridine 2-bromo-6( 2- benzamidoethoxy)pyridine 2-chloro-6( 2-isopropoxycarboxamidoethoxy )pyridine 2-bromo-6( 2-isopropoxycarboxamidoethoxy )pyridine 2-chloro-6( 2-dimethylaminocarboxamidoethoxy)pyri dine 2-bromo-6( Z-dimethylaminocarboxamidoethoxy )pyri dine 2-chloro-6( 2-methylaminocarboxamidoethoxy )pyridi ne 2-bromo-6( 2-methylaminocarboxamidoethoxy )pyridi ne 2-chloro-6[2-methylamino(N-methyl)carboxamidoethoxy1pyridine 2-bromo-6[2-methylamino(N-methyl)carboxamidoethoxy1pyridine 2-chlor0-6(2-anilinocarboxamidoethoxy)pyridine 2-bromo-6(Z-anilinocarboxamidoethoxy)pyridine 2-chloro-6(2-succinamidoethoxy)pyridine 2-bromo-6(2-succinamidoethoxy)pyridine 2-chloro-6( 2-propanesulfonamidoethoxy)pyridine 2-bromo-6( 2-propanesulfonamidoethoxy)pyridine 2-chloro-6(2-benzenesulfonamidoethoxy)pyridine 2-bromo-6( 2-benzenesulfonamidoethoxy )pyridine 2-chloro-6[2(4-methylbenzenesulfonamido)ethox ]pyridine 2-bromo-6[2(4-methylbenzenesulfonamido)ethoxy ]pyridine 2-chloro-6[2-anilino(N-methyl)carboxamidoethoxy] pyridine 2-bromo-6[2-anilino(N-methyl)carboxamidoethoxy] pyridine 2-chloro-6( Z-methacrylamidoethoxy )pyridine 2-bromo-6(Z-methacrylamidoethoxy )pyridine 2-chlor0-6( 2-diethoxythiophosphoramidoethoxy )pyr idine 2-br0mo-6( 2-diethoxythiophosphoramidoethoxy )pyr idine 2-chloro-6(2-diethoxyphosphoramidoethoxy)pyridine 2-bromo-6(2-diethoxyphosphoramidoethoxy )pyidine 2-chl0ro-6-[2(Z-butyramidoethoxy)ethoxy]pyridine 2-(2-butyramidoethoxy )-5iodopyridine 2-( Z-butyrarnidoethoxy)-3-nitropyridine 16 2-( Z-butyramidoethoxy )-5-nitropyridine 2-ethoxy-6( 2-butyramidoethoxy)pyridine 2-chloro-6( Z-butyramido-2-methylpropoxy )pyridine 2-chloro-6( 4-butyramidobutoxy)pyridine 2-chloro-6( l -phenyl-2-butyramidoethoxy)pyridine 2-bro mo-6( l-phenyl-2-butyramidoethoxy)pyridine 2-methyl-6( 2-butyramidoethoxy)pyridine 2-bromo-6( 2-butyramido-2-methylpropoxy )pyridine 2-( Z-butyramidoethoxy )-5-chloropyridine 2-( Z-butyramidoethoxy )-5-bromopyridine 2-( Z-butyramidoethoxy )-3 -chloropyridine 2-chloro-6( Z-butyramidoisopropoxy )pyridine 2-bromo-6( Z-butyramidoisopropoxy )pyridine 2-amino-6( Z-butyramidoethoxy )pyridine 2-chloro-6( 3-propionyloxy propylamino )pyridine 2-bromo-6( S-butyramidopropoxy)pyridine 2-( 2-butyramidoethoxy )pyridine 2-chloro-6-allyloxypyridine 2-chloro-6-propargyloxypyridine 2-chloro-6-benzyloxypyridine 2-chloro-6( 2-phenylethoxy)pyridine 2-ethoxy-6( 2-phenylethoxy)pyridine 2-chloro-6-benzylamino pyridine 2-ethoxy-6-benzyloxypyridine 2,6-dibenzyloxypyridine 3 ,5 -dibromo-2,6-dibenzyloxypyridine 2-chloro-6-benzylthioxypyridine EXAMPLE 84 In this example, 2-chloro-6-benzylthio-pyridine was prepared by the following experimental procedure.

To a solution of sodium ethoxide (271 g; 0.35 mole) in 250 ml. of ethanol was added dropwise benzyl mercaptan (37.0 g; 0.30 moles). The mixture was allowed to stir overnight and the ethanol was distilled ofi at atmospheric pressure. To the resulting paste was added 200 ml of toluene and the mixture brought to reflux. A solution of 2,6-dichloropyridine (44.3 g, 0.3 mole) in 60 ml of toluene was added rapidly to the refluxing mixture and allowed to reflux overnight. The cooled mixture was partitioned between chloroform and water and the organic layer dried with magnesium sulfate, filtered, and evaporated in vacuo to yield a thick oil which was vacuum distilled to yield 2-chloro-6- benzylthiopyridine b.p. 0.01 145l50. Anal. Calcd.

' for C H ClNS: Cl, 15.1, S, 13.6. Found: Cl, 14.69; S,

EXAMPLE 85 In this example, several compounds exemplified in Table I were tested as soil fungicide in accordance with the following test procedure. The results of this test are shown in Table III.

The test organisms, which were Rhizoctonia, Pythium, Fusarium and Sclerotium, was raised in sterile soil cultures to which 10 percent corn meal was added. The soil used for dilution purposes was separately sterilized with methyl bromide. The soil used for test purposes was prepared by mixing 10 percent by weight of infested soil with percent by weight of the sterilized soilQThe test soil was then apportioned in 50 gram quantities to four paper cups for each organism. The soil was treated with a candidate chemical by drenching each cup separately with 10 ml. of a candidate material prepared as a 50 percent wettable powder. The chemical concentration was adjusted to give a dosage of ppm based on weight of the soil.

indicated no injury and indicated the plant was killed. Karmex is used asa standard in this test.

TEST PROCEDURE FOR MEASURING POST- EMERGENT HERBICIDAL ACTIVITY The crops employed in this post-emergence her- 10 bicidal evaluation were pigweed, crabgrass, foxtail,

mustard, Johnson grass, cotton, soybean, oats, corn, to-

TABLE mato, morning glory and red kidney beans. Cotton was normally in the 4-6 week stage at the time of spray ap- Cmpd. 2] 9 36 plication. The kidney beans had well expanded sets of Dose. (ppm) 100 100 100 100 5 first true leaves. Tomatoes were normally two weeks of yt 8 0 6 age. Johnson grass was approximately 2 inches in Rhizoctonla 8 4 0 8 h ht a1 f sclemfium 0 8 6 8 erg emlc s were ormu ated as 50 percent Fusarium s 4 0 s wettable powders and extended in water to the desired concentration. Candidate materials was screened at 5 Lanstan is l-chloro-2-nitropropane lbs/acre active ingredient calculated on a broadcast TABLE v Lbs. Cmpd acre Cot. Soy. Tom. Corn. Oat Pig Mstd. Mngy. Bkbn. Cbgs. Fox lugs.

15 2 4 1o 0 0 2 1o 10 s o o 0 5 2 5 10 0 2 4 9 s 4 s e 7 a 4 4 10 2 4 4 s s 7 5 2 e 5 3 s 10 2 2 6 9 6 7 9 9 6 5 e 10 1o 10 1 s 9 s 10 5 9 5 2 6 s 10 9 4 10 10 1o 10 9 10 8 EXAMPLE 86 basis. The plants were normally scored for phytotoxici- In this example, eight different compounds selected from Tables I and II were tested for herbicidal activity, both preemergent and post-emergent, in accordance with the following test procedures. The results of this test are shown in Tables IV and V.

TEST PROCEDURE FOR MEASURING PRE- EMERGENT HERBICIDAL ACTIVITY Flats were planted to the desired crops to a depth of approximately one-half inch. The crops employed were pigweed, crabgrass, foxtail, mustard, Johnson grass, cotton, soybean, oats, corn, tomato, morning glory, and lambsquarter. The chemicals were initially screened at a dosage of 10 lbs. of active ingredient per acre. Candidate materials as 25 percent wettable powders were extended in water and 250 ml. of such a suspension uniformly distributed over each fiat. The flats were immediately transferred to the greenhouse and covered for a period of three days so that additional watering was not required until some of the plants began to make their appearance above the ground. The flats were then held for 21 days before recording emergence and final phytotoxicity effects was affected. Phytotoxicity data were recorded on a scale of 0 to 10 in which 0 ty 10-12 days after spray application. Phytotoxicity ratings were based on a scale of 0-10, in which 0 indicated no injury and 10 indicated that the plants were killed. Diuron is used as a standard in this test.

It is thus seen that the compounds of this invention are useful as herbicides, fungicides, insecticides and nematocides. The methods of application in which the mono-or poly-substituted compounds of this invention are employed as herbicide, fungicide, insecticide or nematocide, have been discussed previously in the description of this invention.

While the invention has been described with a certain degree of particularity, various modifications can be made therein without departing from the scope of this invention as defined by the following claims.

What is claimed is: I

1. A compound of the formula wherein X is hydrogen, halogen, methyl, ethoxy, amino or nitro, and is located ortho or meta to the ring nitrogen atom; D is alkyl or alkoxyalkyl of from two to five carbon atoms; and Z represents the group TABLE IV Lbs. Lb- Crnpd acre Cot. Soy. Tom. Corn. Oat Pig Mstd. Mngy. qt. Cbgs. Fox Jngs.

10 0 3 7 2 5 9 10 8 10 10 2 0 10 8 8 9 5 5 8 10 10 10 10 10 10 10 7 9 10 7 6 10 10 10 10 10 10 9 10 3 7 9 2 2 10 10 9 10 10 9 10 2 6 7 6 8 10 10 7 10 9 I) 10 7 2 5 4 5 7 7 9 9 I0 8 10 9 8 9 6 7 10 9 9 10 10 8 Karmex 2 2 6 10 4 4 10 10 10 10 10 10 7 *Karrnex is (also known as Diuron) 3-(3,4-dichlorophenyl)-1,l-dimethylurea.

in which R is C C alkyl optionally substituted with from one to three chlorine atoms, C --C cycloalkyl, methylamino or dimethylamino.

2. The compound according to claim 1 which is 2- chloro-6(2-formamidoethoxy)pyridine.

3. The compound according to claim 1 which is 2- bromo-6(2-formamidoethoxy)pyridine.

4. The compound according to claim 1 which is 2- chloro-6(2-acetamidoethoxy)pyridine.

5. The compound according to claim 1 which is 2- bromo-6(2-acetamidoethoxy)pyridine.

6. The compound according to claim 1 which is 2- chloro-6(2-propionamidoethoxy)pyridine.

7. The compound according to claim 1 which is 2- bromo-6( 2-propionamidoethoxy)pyridine.

8. The compound according to claim 1 which is 2- chloro-6(2-butyramidoethoxy)pyridine.

9. The compound according to claim 1 which is 2- bromo-6( Z-butyramidoethoxy)pyridine.

10. The compound according to claim 1 which is 2- chloro-6(2-cyclopropylcarboxamidoethoxy)pyridine.

11. The compound according to claim 1 which is 2- bromo-6(2-cyclopropylcarboxamidoethoxy)pyridine.

12. The compound according to claim 1 which is 2- chloro-6(2-isobutyramidoethoxy)pyridine.

13. The compound according to claim 1 which is 2- bromo-6(2-isobutyramidoethoxy)pyridine.

14. The compound according to claim 1 which is 2- chlor-6(Z-decanamidoethoxy)pyridine.

15. The compound according to claim 1 which is 2- bromo-6(Z-decanamidoethoxy)pyridine.

16. The compound according to claim 1 which is 2- chloro-6(2-cyclohexylcarboxamidoethoxy)pyridine.

17. The compound according to claim 1 which is 2- bromo-6( 2-cyclohexylcarboxamidoethoxy)pyridine.

18. The compound according to claim 1 which is 2- chloro-6[2( 1-methylvaleramido)ethoxy]pyridine.

19. The compound according to claim 1 which is 2- bromo-6[ 2( 1-methylvaleramido)ethoxy]pyridine.

20. The compound according to claim 1 which is 2- chloro-6(2-cyclobutylcarboxamidoethoxy)pyridine.

21. The compound according to claim 1 which is 2- bromo-6(2-cyclobutylcarboxamidoethoxy)pyridine.

22. The compound according to claim 1 which is 2- chloro-6[2( 1-chloroacetamido)ethoxy]pyridine.

23. The compound according to claim 1 which is 2- bromo-6[2( 1-chloroacetarnido)ethoxy]pyridine.

24. The'compound according to claim 1 which is 2- chloro-6 2( l, 1 l -trichlor oacetamido )ethoxy]pyridine.

25. The compound according to claim 1 which is 2- chloro-6(2-isopropoxycarboxamidoethoxy)pyridine.

26. The compound according to claim 1 which is 2- bromo-6(2-isopropoxycarboxamidoethoxy)pyridine.

27. The compound according to claim 1 which is 2 chloro-6[2-anilino(N-methyl)carboxamidoethoxy] pyridine.

28. The compound according to claim 1 which is 2- bromo-6[ 2-anilino( N-methyl )carboxyamidoethoxy] pyridine.

29. The compound according to claim 1 which is 2- chloro-6(Z-methacrylamidoethoxy)pyridine.

30. The compound according to claim 1 which is 2- bromo-6(2-methacrylamidoethoxy)pyridine.

31. The compound according to claim 1 which is 2- chloro-6-[ 2(Z-butyramidoethoxy)ethoxy]pyridine.

32. The compound according to claim 1 which is 2- (2-butyramidoethoxy) 5-iodopyridine. I

33. The compound according to claim 1 which is 2- 2-butyramidoethoxy )--nitropyridine.

34. The compound according to claim 1 which is 2- butyramidoethoxy)-5-nitropyridine.

35. The compound according to claim 1 which is 2- ethoxy-6(2-butyramidoethoxy)pyridine.

36. The compound according to claim 1 which is 2- chloro-6( 2-butyramido-2-methylpropoxy )pyridine.

37. The compound according to claim 1 which is 2- chloro-6(4-butyramidobutoxy)pyridine.

38. The compound according to claim 1 which is 2- methyl-6(Z-butyramidoethoxy )pyridine.

39. The compound according to claim 1 which is 2- bromo-6( 2-butyramido-2-methylpropoxy)pyridine.

40. The compound according to claim 1 which is 2- (Z-butyramidoethoxy)-5-choropyridine.

41. The compound according to claim 1 which is 2- (2-butyramidoethoxy)-5-bromopyridine.

42. The compound according to claim 1 which is 2- (2-butyramidoethoxy)-3-chloropyridine.

43. The compound according to claim 1 which is 2- chloro-6( b Z-butyramidoisopropoxy)pyridine.

44. The compound according to claim 1 which is 2- brom0-6(2-butyramidoisopropoxy)pyridine.

45. The compound according to claim 1 which is 2- amino-6(Z-butyramidoethoxy)pyridine.

46. The compound according to claim 1 which is 2- bromo-6(3-butyramidopropoxy)pyridine.

47. The compound according to claim 1 which is 2- (Z-butyramidoethoxy )pyridine.

48. The compound according to claim 1 which is 2- bromo-6[2( l,1,1-trichloroacetamido)ethoxy]pyridine. 

2. The compound according to claim 1 which is 2-chloro-6(2-formamidoethoxy)pyridine.
 3. The compound according to claim 1 which is 2-bromo-6(2-formamidoethoxy)pyridine.
 4. The compound according to claim 1 which is 2-chloro-6(2-acetamidoethoxy)pyridine.
 5. The compound according to claim 1 which is 2-bromo-6(2-acetamidoethoxy)pyridine.
 6. The compound according to claim 1 which is 2-chloro-6(2-propionamidoethoxy)pyridine.
 7. The compound according to claim 1 which is 2-bromo-6(2-propionamidoethoxy)pyridine.
 8. The compound according to claim 1 which is 2-chloro-6(2-butyramidoethoxy)pyridine.
 9. The compound according to claim 1 which is 2-bromo-6(2-butyramidoethoxy)pyridine.
 10. The compound according to claim 1 which is 2-chloro-6(2-cyclopropylcarboxamidoethoxy)pyridine.
 11. The compound according to claim 1 which is 2-bromo-6(2-cyclopropylcarboxamidoethoxy)pyridine.
 12. The compound according to claim 1 which is 2-chloro-6(2-isobutyramidoethoxy)pyridine.
 13. The compound according to claim 1 which is 2-bromo-6(2-isobutyramidoethoxy)pyridine.
 14. The compound according to claim 1 which is 2-chloro-6(2-decanamidoethoxy)pyridine.
 15. The compound according to claim 1 which is 2-bromo-6(2-decanamidoethoxy)pyridine.
 16. The compound according to claim 1 which is 2-chloro-6(2-cyclohexylcarboxamidoethoxy)pyridine.
 17. The compound according to claim 1 which is 2-bromo-6(2-cyclohexylcarboxamidoethoxy)pyridine.
 18. The compound according to claim 1 which is 2-chloro-6(2(1-methylvaleramido)ethoxy)pyridine.
 19. The compound according to claim 1 which is 2-bromo-6(2(1-methylvaleramido)ethoxy)pyridine.
 20. The compound according to claim 1 which is 2-chloro-6(2-cyclobutylcarboxamidoethoxy)pyridine.
 21. The compound according to claim 1 which is 2-bromo-6(2-cyclobutylcarboxamidoethoxy)pyridine.
 22. The compound according to claim 1 which is 2-chloro-6(2(1-chloroacetamido)ethoxy)pyridine.
 23. The compound according to claim 1 which is 2-bromo-6(2(1-chloroacetamido)ethoxy)pyridine.
 24. The compound according to claim 1 which is 2-chloro-6(2(1,1, 1-trichloroacetamido)ethoxy)pyridine.
 25. The compound according to claim 1 which is 2-chloro-6(2-isopropoxycarboxamidoethoxy)pyridine.
 26. The compound according to claim 1 which is 2-bromo-6(2-isopropoxycarboxamidoethoxy)pyridine.
 27. The compound according to claim 1 which is 2-chloro-6(2-anilino(N-methyl)carboxamidoethoxy)pyridine.
 28. The compound according to claim 1 which is 2-bromo-6( 2-anilino(N-methyl)carboxyamidoethoxy)pyridine.
 29. The compound according to claim 1 which is 2-chloro-6(2-methacrylamidoethoxy)pyridine.
 30. The compound according to claim 1 which is 2-bromo-6(2-methacrylamidoethoxy)pyridine.
 31. The compound according to claim 1 which is 2-chloro-6-(2(2-butyramidoethoxy)ethoxy)pyridine.
 32. The compound according to claim 1 which is 2-(2-butyramidoethoxy)-5-iodopyridine.
 33. The compound according to claim 1 which is 2-(2-butyramidoethoxy)-3-nitropyridine.
 34. The compound according to claim 1 which is 2(2-butyramidoethoxy)-5-nitropyridine.
 35. The compound according to claim 1 which is 2-ethoxy-6(2-butyramidoethoxy)pyridine.
 36. The compound according to claim 1 which is 2-chloro-6(2-butyramido-2-methylpropoxy)pyridine.
 37. The compound according to claim 1 which is 2-chloro-6(4-butyramidobutoxy)pyridine.
 38. The compound according to claim 1 which is 2-methyl-6(2-butyramidoethoxy)pyridine.
 39. The compound according to claim 1 which is 2-bromo-6(2-butyramido-2-methylpropoxy)pyridine.
 40. The compound according to claim 1 which is 2-(2-butyramidoethoxy)-5-chloropyridine.
 41. The compound according to claim 1 which is 2-(2-butyramidoethoxy)-5-bromopyridine.
 42. The compound according to claim 1 which is 2-(2-butyramidoethoxy)-3-chloropyridine.
 43. The compound according to claim 1 which is 2-chloro-6(2-butyramidoisopropoxy)pyridine.
 44. The compound according to claim 1 which is 2-bromo-6(2-butyramidoisopropoxy)pyridine.
 45. The compound according to claim 1 which is 2-amino-6(2-butyramidoethoxy)pyridine.
 46. The compound according to claim 1 which is 2-bromo-6(3-butyramidopropoxy)pyridine.
 47. The compound according to claim 1 which is 2-(2-butyramidoethoxy)pyridine.
 48. The compound according to claim 1 which is 2-bromo-6(2(1,1, 1-trichloroacetamido)ethoxy)pyridine. 